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QUIZ PROBLEM #7 Instructions:  Type your answer to the question in the textbox below. Show all work on your “work” page.  Label which problem it is (#7).   Question: Use dimensional analysis to solve this problem. How many grams of H2O are produced by the reaction of 85.0 mL of 4.25 M HCl solution with excess NaHSO4 in the reaction shown here? 2 NaHSO4 (aq)  +  8 HCl (aq)   –>   Na2S2O3 (aq)  +  4 Cl2 (g)  +  5 H2O (l)   Molar Masses for All Substances: NaHSO4 = 120.06 g/mol   |   HCl = 36.46 g/mol Na2S2O3 = 158.10 g/mol   |   Cl2 = 70.90 g/mol   |   H2O= 18.02 g/mol

QUIZ PROBLEM #8 Situation:  63.4 grams of NO2 and 21.3 grams of H2 are combined and they react according to this chemical equation: 2 NO2 (s)  +  7 H2 (g)   –>   2 NH3 (g)  +  4 H2O (g) Molar masses for all substances: NO2 = 46.01 g/mol   |   H2 = 2.02 g/mol   |   NH3 = 17.04 g/mol   |   H2O = 18.02 g/mol   Instructions:  Type your answers to the questions in the textbox below. Label each answer A, B, C, D, E Show all work on your “work” page.  Label which problem it is (#8).   Questions: A.  Which reactant is limiting? B.  Briefly explain in words how you know which one is the limiting reactant based on your calculations.  Be specific. C.  How many grams of H2O should be produced? D.  How many grams of NO2 should be left over at the end? E.  How many grams of H2 should be left over at the end?  

QUIZ PROBLEM #4 Instructions:  Type your answer to the question in the textbox below. Show all work on your “work” page.  Label which problem it is (#4). Question: You mix 268 mL of a magnesium nitrate solution with enough water to create 5.75 L of a solution that is 0.109 M in Mg(NO3)2. What was the molarity of the original magnesium nitrate solution?

QUIZ PROBLEM #1 Instructions:  Select your answers from the dropdown lists. Note:  It is not possible to format superscripts or degree signs in the answer choice lists. There is no need to write anything on your “work” pages.  But if you do, include that with your scanned pages that you submit later. Questions: Answer the questions below for the molecule shown here: A.  How many sigma bonds are there in this molecule, in total?  [sigmatotal] B.  How many pi bonds are there in this molecule, in total?  [pitotal] C.  Consider just the C atom for these questions: What type of hybrid orbital is it using for its sigma bonds?  [Csigma] What is the angle between its sigma bonds?  [Cangle] What is the name of its molecular geometry?  [Cgeometry] D.  Consider just the N atom for these questions: What type of hybrid orbital is it using for its sigma bonds?  [Nsigma] What is the angle between its sigma bonds?  [Nangle] What is the name of its molecular geometry?  [Ngeometry]

QUIZ PROBLEM #2   Question: Is the molecule shown here polar or nonpolar?  Instructions:  Type your answer in the textbox below. Type your explanation for how you know this in the textbox below. Show all supporting work on your “work” page.  Label which problem it is (#2). TIP:  Save time by only writing out the explanation once.  Don’t write it on your work page and then type it into the textbox.  Compose your answer directly in the textbox.

Question 6 is on the Topic Final Exam: (Handwritten Portion).  Please enter the phrase “Handwritten” inside the box below.

List 4 factors that may impact a child’s prognosis for improvement.

As a clinician, you should choose target sounds that a child is not stimulable for because this will add more sounds to their repertoire.

Give the use of διαρπάσαι: δύναται οὐδεὶς εἰς τὴν οἰκίαν τοῦ ἰσχυροῦ εἰσελθὼν τὰ σκεύη αὐτοῦ διαρπάσαι .

Parse συλλυπούμενος. Give tense [tense] and voice [voice]. If you need the context, it is here: καὶ συλλυπούμενος ἐπὶ τῇ πωρώσει τῆς καρδίας αὐτῶν λέγει τῷ ἀνθρώπῳ, Ἔκτεινον τὴν χεῖρα.